Hello, I'm running FFXIV on a geforce 1080 in dx11 borderless window mode with the latest drivers. Ever since the last windows 10 update I've been having massive slowdowns and stutters in the game.
This used to happen when I had youtube videos running in the background, but tabbing out and back in also used to help with that - not anymore. And now these slowdowns are even occuring on other things, like windows pop-up notifications.
The only way to get rid of the slowdowns is to run the game in fullscreen, which is a real hinderance for playing an mmo.